It selects quality forging stock, while other companies select casting stock.
It uses imported gun drill and multiple drills. The hole is completed at one time, with nice appearance, high capacity. It uses American vacuum oven and continuous quenching furnace to ensure the service life two times longer than before.
Strong R&D which helps customer design compression ratio and strength according to unique requirements, to ensure the discharging and pellet appearance. It uses microscope to do the inspection and uses degassing refining stock while other companies use casting stock.